Granted Patent
Utility
US 6,709,837 · App. 07/488,696
Polypeptide and production thereof
Inventors:
Kazuo Nakahama, Yoshihiko Kaisho, Koji Yoshimura, Reiko Sasada
Patented Case
View Patent ↗
Granted: Mar 23, 2004
Filed: Mar 5, 1990
Inventors
Kazuo Nakahama
Yoshihiko Kaisho
Koji Yoshimura
Reiko Sasada
Assignee (at issue)
Takeda Chemical Industries Ltd.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.